Just a minor addition to my ESP8266 code – the INA219. Set to 32 volts, 2 amps by default, this i2c addition works with the cheap 0x40 addressed boards – I found them as low as under £2 – these little wonders can measure high side voltage and current !…
ESP8266 DIO mysteries SOLVED
So – ESP8266 – it turns out that some of the newer WEMOS boards require DIO mode for programming the FLASH chips – they just either will not program or will appear to but then not run if you use QIO programming mode (a flag used when flashing). At long…
A Tad more SSD1306
Just a short update – in my ESP8266 code I have a driver for the SSD1306 – and one of our readers had difficulty with this some time ago. Today I read the manual. Ooh, err. It turns out I’d put the wrong command in place – it worked if…
A Flashing ESP Chips Surprise
Well, you could have blown me away. Tonight was making a little relay controller for the hot tub using a WEMOS board and relay board. I carefully soldered them together and plugged them into a USB connection on my PC, as I’ve done thousands of times. Also as I’ve done…
How to get the SD Back
So – I’ve been messing around with Ubuntu on a NanoPi Duo setup with motherboard which has build in SSD – all is well. In this and similar systems we have a Windows-readable boot partition and a Linux root partition with everything else except boot. I copied the root partition…
Another Power Supply
Here’s another one for you – Banggood do a small UPS which looks like it might be useful… DC 12V 2A Mini UPS Power Supply On-line Type — https://goo.gl/cyZyPD So just what exactly is this?
NanoPi Duo
The FriendlyArm NanoPi Duo turned up for me today – well, in fact, more than that, a complete kit comprising motherboard, heatsink, SSD and more turned up – read all about it below:
Enter the Banana Pi M3
Last week, a (new to me) company called Allchips sent me a BananaPi 3 to play with. Ending September 24, they have a Raspberry Pi 3 giveaway (not that this has entry anything to do with Raspberry Pi). Banana Pi boards are not something I’ve done a lot with –…
The PCA9685 on a PI Clone
If you’ve been keeping up with the blog you’ll know that I’ve added to the script, code to allow NodeJS access to I2c. And you may also know that for some time my ESP8266 code has supported the little (cheap) purple 16-channel 12-bit PWM/Servo boards called PCA-9685.
Orange Pi Time
This morning, a parcel turned up for me from Banggood with a couple of Orange Pi boards inside it. Specifically the Orange Pi PC2 and the Orange Pi Plus 2E. Shame they’d not turned up earlier as Banggood had their sale on over the weekend – oh, well. Let’s get…
More uninterruptible supplies
Ok, here’s another one for you – this time a DIRT cheap UPS (that’s my theme for this week it seems – CHEAP) – but with the caveat that MAXIMUM draw is 1 amp. Now – you may think that isn’t enough for a Raspberry Pi or whatever but headless…
Grafana and InfluxDB
Some time ago I wrote a blog entry about garden sensors inside of which was buried some information about using Grafana and InfluxDB. At the time the install was not that easy – and when along came STRETCH for the Raspberry Pi (2 and 3) it got worse. However, reader…
In General
Just a couple of discoveries of the week: Backing up a system including Node-Red and the Ubuntu Segmentation Error…
Banggood Sale
The Banggood sale has gone now but they do have a Global Shopping Carnival with coupons!
Cheap as Chips Touch Switch
Those who (jokingly) complain that their wallets empty out every time they read my blog will be in heaven today… backlit and non-back-lit touch switches for as little as FIFTEEN PENCE !!! It’s a winner! Could these be the world’s cheapest backlit touch-switches? (Updated September 07 2017)
More Pretty Colours
Ever since I went to Tokyo and wandered up the busy streets at night, staring at the fabulous colour adverts, I’ve had a thing about making stuff colourful. None of your washed out pastels mind you. And so we come to Linux. Powerful, reliable and at the terminal – BORING…
My Ideal Lamp
Generally speaking, I like to get a good 8 hours sleep. Occasionally, however, something really earth-shatteringly important preys on my mind and won’t let me get past the first 5 hours – this was one of those nights. I’ve been pondering my ideal lamp.
Sonoff T1
The Sonoff T1 is described as a Luxury Glass Panel Touch Wall Switch” – and indeed looking at mine – it looks very nice indeed. The wall switch comes in three varieties with 1 touch area (and one output) up to 3 touch areas (and 3 outputs). There’s a full…
Colour OLEDS
Just in case you were wondering about those pretty two-colour OLEDS we see on Ebay etc.. It would seem they are not QUITE compatible with the normal single colour ones – if you look at the photo on the right, it simply looks like they’ve split board to have yellow…
ODroid C2
You’ll see in an earlier post a little picture of the Odroid C2 and following on from a previous last blog, I’ve had tremendous fun playing with the Virtual Debian – i.e. DietPi – and I just happened to be looking at the Dietpi site (which is very nice incidentally)…